Building construction



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uNiTED zss's rss numnmo coNs'rnUc'rron Arthur W. Hedgren, Pittsburgh, Pa., assigncr to H. H. Robertson Company, Pittsburgh, Pa, a corporation of Pennsylvania 1 Claim.

This invention relates to a building construction and more particularly to a floor construction for a building.

The object of the invention is to provide a. novel and improved flooring construction embodying a metal floor deck, and a layer of insulating material erected upon the floor deck in a novel and improved manner whereby diihculties which have heretofore-been experienced in the application of molten water-proofing material for securing prefabricated insulation to metal floor decks are eliminated,

With this general object in view and such others as may hereinafter appear, the invention consists in the flooring construction hereinafter described and particularly defined in the claims at the end of this specification. I j

In the drawings, illustrating the preferred embodiment of the invention, Fig. 1 is a perspective view of a metal floor deck upon which prefabrisated insulating sheets of substantial thickness have been erected in accordance with the present invention; Fig. 2 is a perspective view of one of the prefabricated insulating sheets ready for erection upon the metal fioor deck; Fig. 3 is a similar view of a modified form of insulating sheet; Fig.

Application May 15, 1943, Serial No. 487,085

the upper surface of a channeled section of theing of preformed insulating sheets'or blocks to floor deck whereby the dimculties heretofore exp rienced are avoided. In its broader aspects the invention contemplates a floor construction comprising a fioor deck, preferably a chenneled-section metal floor deck, and an insulating layer covering the fioor deck comprising a plurality of preformed sheets or blocks of insulating material 2c ing the subject matter of the United States patcuts to Young Nos. 1,855,082, April 19,1932, and.

of substantial thicmess. The insulating sheets have applied to the under surfaces thereof water proofing material prior to erection on the floor deck, and after erection provision is made for mechanically fastening the individual insulating blocks or sheets to the underlying floor deck in a .novel and simple manner, as will be described.

Referring now to the drawings, it represents a metal floor deck which may and preferably will comprise the cellular metal floor structure forml,867,433, July 12, 1932, to which reference may be made. In practice, such a metal floo is made up of a plurality of units, each unit being formed so by welding together two corrugated metal sheets 4 is a perspective illustrating a modified fioor construction embodying the invention; and Fig. 5 is a vertical sectional view illustrating still another modification of the present invention.

In order to provide the required insulation over floor decks, the usual practice has been to erect preformed insulating sheets or blocks upon the fioor deck using molten asphalt or other fluid waterproofing material as a waterproofing and adhesive for securing the insulating sheets or blocks to the upper surface of the floor deck. When a cellular metal fioor. deck such as is illustrated in the Young Patents Nos. 1,855,082, April 19, 1932, and 1,867,433, July 12, 1932, is used, many difilculties have been experienced in the attempted application of molten asphalt or other waterproofing material to the uppe channelv surface of the cellular metal floor deck shown in said Young patents. Because of the usual channel or corrugated structure of the upper surface oi the floor deck it has been difflcult to obtain satisfactory, uniform and economical distribution of the molten or fluid waterproofing material over ticularly to the satisfactory erection and fastenlated floor construction which lends itself parto form a cellular metal floor unit and the complete fioor is formed by erecting such units in contiguous relation to form the load supporting member of the completed floor. The upper surface of the metal floor is usually characte by a channeled or corrugated upper surface and as above stated considerable dimculty has been experienced in the application of waterproofing to the corrugated upper surface of the floor preparatory to the application thereof of insulation, and the usual floor finishes. This difficulty arises when a workman attempts to mop molten asphalt or other fluid waterproofing upon the channeled or corrugated surface of the floor deck resulting in filling or at least partially filling the channels or. corrugations and preventing a uniform, economicsl and satisfactory application of the waterproofing.

In accordance with the present invention, the cellular metal floor I0 is provided with a series of fastening devices for securing preformed insulating blocks or sheets I! in operative position upon the upper surface of the metal fioor. In practice the fastening devices may comprise a series of metal tie members ll, each having hooks II, it formed at the ends thereof and of a length suilicient to permit the hook "on the lower end of each tie member to hook under the downwardly turned lip 20 formed on one side edge of each cellular metal flooring unit making up the. complete metal floor deck, and to permit the hook I! at the upper end thereof to receive a metal rod or other tie member as illustrated in Fig, l .to tie 'down and secure the individual insulating sheets to the upper surface oi the floor sides and ends of adjacent insulating sheets, preparatory to the application of the usual floor finishes over the surface of the insulation. In practice heavy felt saturated with asphalt or other waterproofing material may be used for this purpose and the ends and sides of the waterproofing sheet wrapped about the sides and ends of each insulating sheet in the manner illustrated in Fig. 2, and temporarily secured thereto so as to permit a composite waterprooied insulating sheet to be erected and secured in place by the mechanical fastening devices above referred to.

For some purposes I may prefer to waterproof the underlying surface of the insulating sheets 12 by the application thereto of molten asphalt or other fluid waterproofing material to provide each aasaees In rigs I m illustrated a still further modifieation of fastening device for mechanically securing the insulating sheets to the upper surface be attached by tie rods 3! extended through hooks of the floor deck and such a stmctureincludes pointed metal members 32 each having a stud 33 upstanding therefrom. The members 32 are adapted to be forced into the corrugations in the floor-deck between the sides. of adjacent corru gations and to so deform the walls thereof as to anchor the metal studs to the upper surface of the metal floor deck. The insulating sheets I! may ll formed upon the upper ends of such upstanding' studs 3:, it being understood that a sullicient number of the studs will be erected in the manner described above so as to permit the sheets to be properly secured in place.

While different embodiments of the invention have been illustrated and described, it will be understood that the invention may be embodied in other forms within the scope of the following claim.

Having thus described the invention, what is claimed is:

In a building construction, a metal floor deck madeup of a plurality 01' contiguous corrugated units, each unit being provided with substantially rectangular corrugations and being provided upon .0118 marginal edge with a downwardly turned insulating sheet with a substantial layer 28 of waterproofing material covering the bottom thereof; Such waterproofed insulating sheet may then be erected as above described.

- Instead of the metal fastening devices illustrated in Fig. 1 and described above, the insulating material forming the insulating sheets or blocks may be of a nature such as Masonite, Celdtex and the like, adapted for nailing and when such material isutilized as the insulating sheets,

lip, said lip cooperating with an upwardly turned lip on the next adjacent corrugated unit to connect together said units, said downwardly turned lip being disposed in one of the corrugations below the plane of the upper surface of the cogru- 35 gated floor deck, a plurality of preformed'i'nsw lating sheets of substantial thickness erected in contiguous relation on the upper surface of the fioor deck, and a plurality of fastening devices for attaching the insulating sheets to the fioor 40 deck, each comprising a metal tie member pro- I may prefer to clamp wooden nailing strips 28 in the corrugations of the upper surface of the metal floor deck in any suitable manner, such as bythe clamping members 30 as shown in detail in Fig. 4, and then the individual insulating sheets waterprooi'ed as above described may be nailed directly on the nailing strips.

vided with a hook upon each end thereof, the lower hook being hooked under the downwardly turned lip upon the marginal edge of the corrugated unit, and the upper hookbeing hooked over a rod engaging the upper surfaces of two contiguous insulating sheets substantially as described.

r ARTHUR W. HEDGREN. 

